Improvement in manufacture of gravel bricks



4 97 {0 /4 e N. TUBES.

Manufacture of Gravel Brick.

No. 223,018. Patented Dec. 30,1879.

223,018. mnumcrunr: or GBAVEL Bmcxs. George N. Tures, Lincoln Township, Dickinson County, Kane. Filed Nov. 6,1879.

; 1 Claim-The artificial stone or brick composed of gravel, hydraulic cement, 1 and plaster-of-paris, in the proportions and molded into blocks substantially as l fand for the purpose described.

Wil nedoed /g Ii r5925. PNOTQJTNGSRAPHEE. wsswnr-Tc-a r.

UNITED STATES PATENT OFFICE.

GEORGE N. TUBES, OF LINCOLN TOWNSHIP, DICKINSON COUNTY, KANSAS.

IMPROVEMENT IN MANUFACTURE OF GRAVEL BRICKS.

Specification forming part of Letters Patent No. 223,018, dated December 30, 1879; application illtd November 6, 1879.

To a] Z wlzmn it may concern:

Be it. known that I ,GEORGE NELSON TUB-ES, of Lincoln township, in the county of Dickinson and State of Kansas, have invented certain new and usefu Improvements in the Manufacture of Gravel Bricks and Gravel Blocks; and Ido hereby declare that the following is a full, clear, and exact description of theinvention, which will enable others skilled in the art to which it appertains to make and use the same, reference being bad to the accompanying drawing, and to letters of reference marked thereon, which forms a part of this specification.

My invention relates to acomposition for building brick or stone, consisting of "ITLYEL waterlune, and plaster-otlpa i s lll tfia proportiiihsfand molded into blocks of suitable size, as hereinafter fully described.

In the drawing, A is a perspective view ofa double block having a crease, I), representing the size of the blocks as seen when built into a wall.

It is evident that these blocks may be made of any required size and shape.

The whole compound, consisting of, say, fifty-six (56) parts, is composed of about fiftyone 51) parts of rave]. three 3) parts of bydrau lic cementm (2) pz rts of la c ese ingredients, while in a "v 0 iaris. V siate, are thoroughly mixed together, and then X. M MWMM.

the whole mass is saturated with water and thoroughly mixed and stirred, like common mortar is made; and when the compound is thus thoroughly mixed in a wet state it is immediately placed in suitablemolds, and formed into blocks of the required size and shape, and dried in the atmosphere.

For lightcolored brick the quantity of the plaster-of-paris should be about twicethe quantiit yoi'"'t]1e cement, aiid for d ark-colored brick tli'g iantity oi' plaster-of-paris should beonly abopilfiltthefiiia'iitityofthc cement.

"'1 am awarethat'water lime and plaster-litparis have been used lll cements andin artificial stone with other ingredients; but I am not aware of brick or stone composed aloneof the ingredients in the proportions which 1 use.

What I claim as new, and desire to secure by Letters Patent, isr The artificial stone or brick composed of "ravel hydraulic cement and daster-ot'paris, 1n tie prt'ifi'di tiiiiis"wu moldmocks, substantially as and for the purpose described. In testimony that I claim theioregoing as my own I aflix my signature in presence of three witnesses.

GEORGE NELSON TUBES. Witnesses:

S. A. BURROUGHS, R. C. RAYMOND, J. H. BURRIS. 

